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2020 Silverado HD & Sierra HD Troubleshooting

A central location to report any issues or asking for help troubleshooting any problems with your 2020 Chevrolet Silverado 2500 / 3500 or 2020 GMC Sierra 2500 / 3500. Also recall announcements and Technical Service Bulletins (TSB).

307 topics in this forum

  1. Re-Learn TPMS Sensors after tire rotation

    By Randy_Smith,
    • 6 replies
    • 174 views

  3. Clunk from Transfer Case

    By Tshock,
    • 2 replies
    • 106 views

  4. Dash buzzing at idle after cold start

    By Njmurvin,
    • 5 replies
    • 607 views

  5. key fob transmitter faulty? 1 2

    By FirstAscent,
    • 22 replies
    • 6,128 views

  6. 2020 2500hd high country door latch noisy

    By Paul jackckson,
    • 9 replies
    • 900 views

  7. New truck need hitch ball for 5th wheel prep

    By GMC4Zee,
    • 6 replies
    • 426 views

  8. 3.0 Duramax cranks but won’t start

    By Dbersuch,
    • 6 replies
    • 647 views

  9. Back Up Camera

    By CT Chevy Connoisseur,
    • 3 replies
    • 165 views

  10. Aux power limit

    By Bob 5th Wheel,
    • 0 replies
    • 126 views

  11. Trailer Cameras Not Working

    By Bazel,   
    • 14 replies
    • 996 views

  12. Brakes Squeaking @ 10K 1 2 3 4

    By LarryM,
    • 50 replies
    • 8,318 views

  13. 2021 Duramax issues, less than a week old.

    By Joe_Lee,
    • 6 replies
    • 2,903 views

  14. New Infotainment System Update v148 / Radio won't shut off issue 1 2

    By SkidooSteve12,
    • 16 replies
    • 26,163 views

  15. Trailer TPMS sensors loose signal 1 2 3 4 5

    By Andrew Best,   
    • 73 replies
    • 6,270 views

  16. Truck shuts off after 1 hour while parked.

    By Mi99z71,
    • 10 replies
    • 4,349 views

  17. Infotainment System Rebooting

    By mdbourque,   
    • 5 replies
    • 1,972 views

  18. 2020 6.6 Liter Gas Engine Problems

    By Bill Shaffer,   
    • 0 replies
    • 323 views

  19. 2020 GMC AT4 - Won't start, won't even attempt to turn over 1 2

    By CO 2020 GMC AT4,
    • 24 replies
    • 12,738 views

  20. NOX Sensor Recalibration

    By Utah_ee,
    • 3 replies
    • 590 views

  21. Steering Issues

    By Tshock,   
    • 1 reply
    • 312 views

  22. Engine auto shutoff solution Sierra 2500

    By Denaliboz,
    • 3 replies
    • 365 views

  23. GM Trailer Camera

    By jhcfc,   
    • 0 replies
    • 178 views

  24. 2020 2500HD Transmission issues 1 2 3

    By gpraceworks,
    • 42 replies
    • 20,328 views

  25. Drivers inside front axle seal

    By sealberta,
    • 0 replies
    • 182 views

  26. Trailer lights 1 2 3 4

    By Jordan94,   
    • 59 replies
    • 26,615 views


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